001/*
002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Jean-Marc Orliaguet, Chalmers
018 *
019 * $Id$
020 */
021
022package org.nuxeo.theme.jsf.negotiation.perspective;
023
024import javax.faces.context.FacesContext;
025
026import org.nuxeo.theme.jsf.negotiation.CookieManager;
027import org.nuxeo.theme.negotiation.Scheme;
028import org.nuxeo.theme.perspectives.PerspectiveManager;
029
030public class CookieValue implements Scheme {
031
032    public String getOutcome(final Object context) {
033        final String perspectiveName = CookieManager.getCookie("nxthemes.perspective",
034                ((FacesContext) context).getExternalContext());
035        if (perspectiveName == null) {
036            return null;
037        }
038        if (PerspectiveManager.hasPerspective(perspectiveName)) {
039            return perspectiveName;
040        }
041        return null;
042    }
043}